MATLAB: NEED HELP ON MATRIX MANIPULATIONS

MATLABmatrixmatrix arraymatrix manipulation

Consider a matrix
A= 21 14 7 0
18 11 4 3
15 8 1 6
12 5 2 9
9 2 5 12
6 1 8 15
3 4 11 18
0 7 14 21
My objective is to reach from base value 0 to top value 0 as underlined for dynamic time warp algorithm traversal by parsing through the smallest element of each row.
A= 21 14 7 0
18 11 4 3
15 8 1 6
12 5 2 9
9 2 5 12
6 1 8 15
3 4 11 18
0 7 14 21
The cost assignment can be defined as find the smallest element in each column :
1| 21 14 7 0
0| 18 11 4 3
1| 15 8 1 6
0| 12 5 2 9
0| 9 2 5 12
1| 6 1 8 15
0| 3 4 11 18
1| 0 7 14 21
So cost= 1 0 1 0 0 1 0 1
Cost assignment concept:
assign 1 whenever there's a smallest single unique element in the row .
Assign 0 whenever no smallest element is present or when multiple smallest same elements are present in the same row or column,then first instance should be zero and next to be 1 i.e. for example
1| 20 15 10 5 0
1| 16 11 6 1 4
1| 12 7 2 3 8
0| 8 3 2 7 12
1| 4 1 6 11 16
1 | 0 5 10 15 20

Best Answer

A = [  21    14     7     0
       18    11     4     3
       15     8     1     6
       12     5     2     9
       9     2     5    12
       6     1     8    15
       3     4    11    18
       0     7    14    21];
                
m = min(A,[],2) ;
 cost = m == 0 | m == 1 ;
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